Answer this question truthfully
### Question: When to seek urgent medical care when I have Altitude sickness ?
### Response: Call your health care provider if you have or had symptoms of altitude sickness, even if you felt better when you returned to a lower altitude.
Call 911 or your local emergency number, or seek emergency medical assistance if severe difficulty breathing develops, or if you notice a lower level of consciousness, coughing up of blood, or other severe symptoms. If unable to contact emergency help, descend immediately, as rapidly as is safely possible.